CVE-2024-27019: netfilter: nf_tables: Fix potential data-race in __nft_obj_type_get()
First published: Wed May 01 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_obj_type_get() nft_unregister_obj() can concurrent with __nft_obj_type_get(), and there is not any protection when iterate over nf_tables_objects list in __nft_obj_type_get(). Therefore, there is potential data-race of nf_tables_objects list entry. Use list_for_each_entry_rcu() to iterate over nf_tables_objects list in __nft_obj_type_get(), and use rcu_read_lock() in the caller nft_obj_type_get() to protect the entire type query process.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.15.157 | 5.15.157 |
| redhat/kernel | <6.1.88 | 6.1.88 |
| redhat/kernel | <6.6.29 | 6.6.29 |
| redhat/kernel | <6.8.8 | 6.8.8 |
| redhat/kernel | <6.9 | 6.9 |
| Linux kernel | >=4.10<5.15.157 | |
| Linux kernel | >=5.16<6.1.88 | |
| Linux kernel | >=6.2<6.6.29 | |
| Linux kernel | >=6.7<6.8.8 | |
| Linux kernel | =6.9-rc1 | |
| Linux kernel | =6.9-rc2 | |
| Linux kernel | =6.9-rc3 | |
| Linux kernel | =6.9-rc4 | |
| Fedora | =38 | |
| Fedora | =39 | |
| Fedora | =40 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 |
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Reference Links
- https://git.kernel.org/stable/c/379bf7257bc5f2a1b1ca8514e08a871b7bf6d920
- https://git.kernel.org/stable/c/4ca946b19caf655a08d5e2266d4d5526025ebb73
- https://git.kernel.org/stable/c/ad333578f736d56920e090d7db1f8dec891d815e
- https://git.kernel.org/stable/c/cade34279c2249eafe528564bd2e203e4ff15f88
- https://git.kernel.org/stable/c/d78d867dcea69c328db30df665be5be7d0148484
- https://git.kernel.org/stable/c/df7c0fb8c2b9f9cac65659332581b19682a71349
- https://launchpad.net/bugs/cve/CVE-2024-27019
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-27019
- https://nvd.nist.gov/vuln/detail/CVE-2024-27019
- https://security-tracker.debian.org/tracker/CVE-2024-27019
- https://ubuntu.com/security/CVE-2024-27019
- https://git.kernel.org/linus/d78d867dcea69c328db30df665be5be7d0148484
- https://access.redhat.com/security/cve/CVE-2024-27019
- https://lore.kernel.org/linux-cve-announce/2024050150-CVE-2024-27019-e3d4@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2278259
- https://access.redhat.com/errata/RHSA-2024:4823
- https://access.redhat.com/errata/RHSA-2024:4831
- https://access.redhat.com/errata/RHSA-2024:5102
- https://access.redhat.com/errata/RHSA-2024:5101
- https://access.redhat.com/errata/RHSA-2024:5928
- https://access.redhat.com/errata/RHSA-2024:6753
- https://access.redhat.com/errata/RHSA-2024:6993
- https://bugzilla.redhat.com/show_bug.cgi?id=2278258
Frequently Asked Questions
What is the severity of CVE-2024-27019?
CVE-2024-27019 has been classified with high severity due to its impact on the Linux kernel's data handling.
How do I fix CVE-2024-27019?
To fix CVE-2024-27019, update your kernel to versions 5.15.157, 6.1.88, 6.6.29, 6.8.8, or 6.9.
What versions of the Linux kernel are affected by CVE-2024-27019?
CVE-2024-27019 affects multiple versions of the Linux kernel ranging from 4.10 to pre-release 6.9.
What systems are impacted by CVE-2024-27019?
CVE-2024-27019 impacts Red Hat, Debian, and Fedora systems running vulnerable versions of the Linux kernel.
Is CVE-2024-27019 a critical vulnerability?
CVE-2024-27019 is considered critical due to the potential for exploitation affecting system stability.
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